One
Three
Five
Seven
Phone Numbers
100

This element has exactly one proton, making it the first on the periodic table. 

Hydrogen

100

To maintain these is a good safety tip when it comes to climbing ladders and climbing mountains.

Three points of contact

100

This five fingered gesture was attributed to LA Dodgers', Dusty Baker, congratulating Glenn Burke on his 30th homerun of the season. 

High Five

100

One of the seven days of the week is named after Odin's son, of Norse mythology and famed Avenger.

Thursday (Thorsday)

100

In a song, pop artist, Tommy Tutone, repeatedly recites this number that would call his crush, Jenny

867-5309

200

Four ingredients, sugar, spice, everything nice, and Chemical X, make up these three crime-fighters.

The Powerpuff Girls

200

This five sided building is the headquarters for the US Defense Department. It was originally planned to have the shape in order to fit between existing road structures.

The Pentagon

200

One of the Seven Dwarves in Snow White. This one is known for his jolly behavior and big smile.

Happy

200

Should you be in an emergency situation in Europe and Asia, this is the number you call. Not 911.

112

300

Unlike its two wheeled counterpart, changing gears on this device is done by using one's heel or ankle to hit a button close to the pedal.

Unicycle

300

The Mesozoic Era, in which the dinosaurs lived, is broken into three geologic periods, the Triassic, Jurassic, and this.

Cretaceous

300

This type of sports team has five players on the field, consisting of a center, point guard, shooting guard, small forward and power forward. 

Basketball

300

One of the Seven Modern Wonders of the World. It is located 2,430 miles above sea level in the Andes Mountains. The entire structure served the Incan Empire for religious, astrological, and agricultural purposes. 

Machu Picchu

300

Empire Today flooring services would love to do business with you. All you have to do is call this number.

800-588-2300

400

This Latin word for "one" is part of the motto of the United States, signifying the many states making up one country.

Unum

400

Alexandre Dumas created this famed literary trio, basing them on the elite guard of Louis XIII.

The Three Musketeers

400
The Five Pillars of Islam consist of Faith, Prayer, Almsgiving, Fasting, and this type of religious journey.

Pilgrimage

400

One of the Grecian Seven Seas. Access to a deep water port in this sea has been highly sought after by Russia ever since the Crimean War in 1853. 

Black Sea

400

This area code is largely unassigned, leading film companies to use it when displaying their fictitious phone numbers is movies, such as in Ghostbusters.

555

500

Countries like Turkey and Denmark have this type of legislature, meaning that there is only one body creating and voting on laws to pass for their countries, unlike the US which has two.

Unicameral.
500

Consisting of five vocalists, this "Wannabe" band sold over 85 million records worldwide, making them the best-selling girl group of all time. 

Spice Girls